Plow attachment



- (No Model.) I

A'. B. DE BRUCE.. PLOW ATTACHMENT. y `NO. 439,575. Patented O01). 28, 1890.

UNITED STATES PATENT CEEICE.

ARCI-IIBALD B. DE BRUCE, OF ARKANSAS CITY, KANSAS.

PLOW ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 439,575, dated October 28, 1890.

Application filed August 20, 1890.

To all whom t may concern:

Be it known that I, ARCHIBALD B. DE BRUCE, of Arkansas City, in the county of Cowley and State of Kansas, have invented a new and useful Improvement in Plow Attachments, of which the following is a specification.

My invention relates generally to plows, and more particularly to an attachment to be used upon the same, whereby the mold-board will always be kept clean when plowing in sticky soil; and with this object in view my invention consists of a plate of essentially the same size and general form as the mold-board of the plow, the under or convex side of which is made smooth or polished, said plate being secured a suitable distance forward of and above the mold-board to compress the soil turned up by the plow, whereby the soil so compressed will all pass easily between the mold-board and plate, thereby preventing the soil sticking to the mold-board.

In the drawings forming a part of this specification, and in which the same letters of reference indicate the same parts, Figure l is a top plan view. Fig. 2 is a bottom plan view, and Fig. 8 is a section on line 3 3 of Fig. l.

Referring to the drawings, A indicates the beam, B the standard, C the plowshare, and D the handles, all of which may be of any approved pattern. A plate E of steel, iron, wood, glass, or other material, of essentially the same size and general form as the moldboard, is arranged a suitable distance forward of and above the mold-board, said plate being supported at its forward end by the arm F, said arm being rigidly secured at its lower end t0 the outer face of the plate E, its upper end being clipped to the side of thebeam by means of the clip G.

An inverted-U-shaped spring-arm H is secured at one end to the outer face of the plate E near its rear end, said arm passing over the top edges of said plate and the moldboard, and is secured at its opposite end to the under face of the mold-board, as clearly shown.

The under side of the plate E is conveXed upon essentially the same lines as the moldboard is concaved, thereby placing the adjacent faces of the mold-board and plate in approximately parallel curved planes with each other.

Serial No. 362,525. (No model.)

The outer face of the mold-board is always made smooth or polished, and the under side of the plate E is likewise smoothed or polished, and when plowing the soil that passes up between the mold-board and plate is compressed into a homogeneous mass, and the continued entrance of soil tends to force the compressed mass out at the side, as usual. The compression is not great, but is always sufficient to render the cohesive force of the mass greater than the adhesive force of the same, thereby preventing any sticking to either mold-board or plate. By means of the Clip G the plate E can be adjusted at any suitable distance, and by means of the springarm at the top and rear the plate E is permitted to spring outward should a rock or otherobstruction be caught between the plate and mold-board.

Having thus described my invention, what I claim as new is- 1. In a plow attachment, the combination, with a mold-board, of a plate arranged asuit able distance forward of and above the same, said plate being of essentially the same size and general form as the mold-board, the under surface of said plate being convexed and smoothed, substantially as shown and described.

2. In a plow attachment, the combination, with a mold-board, ofk a plate arrangeda suitable distance forward of and above the same. the adjacent faces of the mold-board and plate being essentially parallel, and the arm rigidly secured to the forward end of the plate and adjustable upon the beam of the plow, substantially as shown and described.

3. In a plow attachment, the combination, with a mold-board, of a plate arranged asuitable distance forward of and above the same, the adjacent faces of the mold-board and plate being parallel and polished, the arm secured to the forward end of the plate and adjustable upon the beam of the plow, and the spring-arm secured to the rear end of the plate and mold-board, substantially as shown and described.

ARCHIBALD B. DE BRUCE.

Witnesses:

J. F. TUCKER, W. IVI. MILLER.

Ioo 

